Gramophone-stop.



R. E. WILLIAMS.

GRAMOPHONE STOP.

111 1111011101: FILED MAR.3,1911.

Patented Aug. 22, 1911.

2 SHEETS-SHEET 1.

R. E. WILLIAMS.

GRAMOPHONE STOP.

APPLICATION FILED MAR.3,1H11.

Patented Aug. 22, 1911. 2 sflnfiTw-snnn'r 2.

UNITED STATES PATENT ornrcn.

RALPH E. WILLIAMS, ()1? ST. LOUIS, MISSOURI.

GRAMOPHONE-STOP.

Specification of Letters Patent; Application filed Marchfi, 1911. Serial No. 611,987.

To rill whom it may concern:

Be it known that I, RALPH E. VILLIAMS, a cltlzen of the United States, residing at St. Louis, in the State of Missouri, have in-, vented certaln new and useiul Improvefrom the center of the disk.

'Other and further objects will appear in the specification, and be specifically pointed out in the appended claims, reference being had to the accompanying drawings exemplifying the invention, and in which- Figure 1 is a plan view of a gramophone provided with my npr-ved braking device. Fig. 2"is partial side elevation of the same. partly broken away, and parts being shown in section. Fig. 3 is a section on the line III-III, Fig. 2, showing the brake-ope ating mechanism in operative position. Fig. 4. is a section on the lineIV-IV, Fig. 2. Fig. 5 is a fragmentary section through the 'axisof the turn table having a disk record mounted thereon. Fig. 6 is a section on the line VI-VI, Fig. 1.

The present invention contemplates the provision. of improved means for automatically stopping a disk gramophone at the end of a selection, said means being adjustable to adapt it. for use with records which end at different distances from the center and according to which a. trip adjustment device is mounted adjacent the center of the disk which is operable under very, delicate pres sure from apart moving with the sound box. the brake being applied independently 'whcre itis most efficient.

of the sound box and at the rim of the disk In carrying out these purposes ofthe invention the adjustable trip comprises a durable but very deli cately mountedt'sip lever which is weight ed to throw it into position to engage a brakereleasing lever and a stop which normally maintains the trip lever in inoperative position. but which by very sh ght pressure from the sound box or needle carried thereby, is

Patented Aug. 22, 1911.

moved into release position. l' urthermm'e,

my inproved automatic stop can be attached withoutalterations to almost anv ol' the gramophones on the market and mav be applled to all the other machines by the provision of a few additional attachments, depending on the make and stvle of the machine.

Referring more particularly to the draw ings, the turntable l of the gramophonc has mounted thereon a. disk record 2 which is retained in position by a center plate 3 provided above with an integral knob or handle --t by means of which it mav be lifted. Said center plate and knob are provided with a. center bore 5 adapting it to fit over the reduced end portion U of the gramophone spindle 7, a clamping spring 8 being secured to the inner wall of the bore by a screw 9. Projecting from the center plate 3 is a radial arm 10 provided with an upwardly deflected portion 11 which provides a pedestal or support for a tripping lever 12. said tripping lever 12 being provided with a recess forming a shoulder 13 which is normally engaged by a release lever H whose outer end is provided with'an upwardly projecting support 15 through a perforation in which extends a rod or pin 16. The inner end of the pin 16 is supported by an eyelet 17 or other suitable means carried by the release lcvcr l-t. Said release lever 14 swings about a pivot 18 and has its movement limited by a stop pin 19 in the path of movement of a projection 20 formed on said release lever. As shown best, in Fig. 1. of the drawings. the trip lever 13 has one end deflected and provided on the extremity of that end with an enlarged portion or weight 21 which. when the release lever 14 is moved laterally in the manner to be hereinafter set forth. permits the trip lever 13 to assume the position shown in Fig. in which its other end 2'2 in the form ot a. finger is elevated to a. position in which it will engage the inner end of a hrakw operating lever 93. aid brake operating lever 93 is provided with a dmvnnardly projecting portion 24 with a deflected foot 23 pivotally mounted. in the present cmbodh 1ucnt.upon abasc plate ltiby meanw l a pivot screw 27. Pivotally mounted upon the same screw 27 is a stop engaging lever 38 having an upwardly projecting finger hold 29 and provided on its outer swinging end with a hook or cam30 which is adapted to sli-lahly engage a cam pin 31'proje ting downwardly from the slide bar 32 of a resiliently mounted brake pawl. Said brake pawl is adapted to impinge the periphery of the turntable 1 by having. a pad 33 of rubber or other suitable material mounted in an enlarged socket head 34 which slides within a housing 35 which is radially secured to the base plate 26 by ascrew 36 which projects into a depending portion 37 of said housing 35. A spring 38 serves to resiliently press the brake pawl against the turn-table 1.

In Fig. 1 of the drawings, a swingingly mounted sound tube 39 of well known construction is illustrated,-provided on its outer end with a sound box &0. Depending from the sound box 40 is the usual needle 42 which travels over the record and sooner or later engages the pin 16 carried by the release lever 14, said pin 16 being constructed of any desired length correspondin to the range of. diameters in the record dis The operation of my device will now be understood, and briefly stated is as follows: The pin 16 having been adjusted to bring its outer "extremity adjacent the innermost record groove of the disk 2, the .machine may be set in motion and left to run its course, the sound box needle 42 at the end of 3o the record being brought into engagement with the pin 16 and serving to displace the release lever 14 by that means. When the release lever 14: is displaced laterally, the

weight 21 forces the trip lever 12 into opera-.

tive position in which the finger 22 thereon will be brought into engagement with thebrake-operating lever 23 causing said lever to be displaced into the position shown in dotted lines in Fig. 1. By this movement of the brake-operating lever, a pin 43 which projects downwardly from the foot of the brake-operating lever, is brought into engagement with the cam lever 28 causing said lever 28 to be displaced laterally to release the hook 30 from the pin 31 on the brake pawl and permitting the spring 38 to force brake pad 33 against the periphery of the turn-table.

What I claim is: v

1. In a device of the, character described, the combination with a turntable of a braking element provided with means tending to move it against the periphery of said turntable, means for holding said braking element outof engagement with the turn-table,

and means operatably connected with the last said means for causing the release of the braking element and comprising a member adjacent the center of the turn-table and re- 3 volving therewith, said member being normally in an inoperative position, and means for moving said member into operative position. f a

2. In a device of the character described, the combination with a turntable, a sound box and a stopforengaging said turntable,

of a lever overhanging said turntable, means carried by-said turntable adjacent its axis for operating said lever, said means being movable into and out of operative position, and other means operatively related to the sound box for holding the first said means in inoperative position, said other means be-i ing displaced by a member carried by the sound box when said member has reached a predetermined position.

3. In a device of the character described, the combination with a turn-table and a sound box provided with a needle movable across said turn-table, of aresiliently mounted braking element operatively related to the periphery of said turn-table, a lever for holding said braking element out of engage- -ment with said turn-table," another lever operatably engaging the former lever, a disk retaining member at the center of said turntable, and means carried by said retaining member for operatably engaging the second lever, said means comprising a trip lever, and means for holding said triplever out of operative position,'the last said means being adjustable radiallyto engage the. sound box needle at different distances from the axis of the turn-table.

4. In a device of the character described, the combination with a turn-table and a sound box movable thereacross and provided with a tracing needle, of a braking device disposed adjacent the periphery of said turntable and having an operating lever projecting across the face of said turn-table, a center piece for holding a disk in place .on said turn-table, atrip lever pivotally mounted on said center piece, said trip leyer being provided with means tending to hold it in position to engage said operating lever, a stop lever movable into and out of engagement with said trip lever, and means carried by said'stop lever for oper'atively engaging the sound box needle.

5. In adevice of the character described, the combination with a turn-table and a sound box movable thereacross and provided with a tracing needle, of a brakingdevice disposed adjacent the periphery of said turn-table and having an operating lever projecting across the face of said turn-table,

a centerpiece for holding a disk in place on said turn-table, a trip. lever pivotally mounted on said center piece, said'trip lever being by said stop lever for operatively engaging a the sound box needle, said means being adjustable, toward and away from-the center of said turn-table.

6, In a dev ice of the character described, the comb nation with a turn-table an a sound box suitably supported to move across a record disk carried by said turn-table, said sound box beingprovided with a tracing needle, of a resiliently mounted brake element for engaging the "periphery of the turn-table, a cam lever for holding said braking element out of engagement with the turn-table, an operating lever adapted to move said cam lever out of engagement with the braking element, said operating lever being disposed across the face of said turn-table, a disk-retaining center piece rotatable with said turn-table, a trip lever carried by said center piece, said trip lever being weighted to normally hold it in a position for engaging said operating lever, a stop lever normally holding said tripping leverout of operative position, and a pin ,carried by said stop lever and adapted to said sound box being be engaged by the sound box needle. 7. In a device of the character described,

the combination with a turn-table and a sound box suitably supported to move across a record disk carried by said turn-table,

rovided with a tracing needle, of a reslllently mounted brake element for engaging theperiphery of the turn-table, a cam lever for holdm I braking element out of engagement with the Go'pies' of this patent may be obtained for said' by said stop lever, said pin being slidably mounted to adapt it to engage the sound box needleat different distances from the center. 8. In a device of the character described,

the combination with a turn-table, and a' braking device having a. member supported adjacent the peri hery of, and overhanging," saidturntable, o a sound box provided with p a tracing needle and means revolving with said turn-table for operating said member, said means being provided with an element adjustable to and from the-center of the turn-table to intercept the tracing needle at any desired distance from the center.

. RALPH E. WILLIAMS.

In the presence of- J.- B. MncowN, M. C. HAMMON.

five cents each, by addressing the Commissioner of Iatenta, Washington, D. C. y 

